高放射性废物

There are 8.6%~10.91% foreign matter in the sphenes, in which radioactive elements of strontium, cesium and uranium range from 4.26% to 4.58%. The change of structural cell parameters of sphenes is still very little,Δa=-0.0009 nm~0.0041 nm,Δb=0.0018 nm~0.0004 nm,Δc=0.0002 nm~0.0048 nm,Δβ=-0.10°~0.09° with high crystallinity of 99.27%~96.46%. Though, the age of sphene from the Fenghuang Mountain is about 1000 Ma, and experienced 775 Ma~1758 Ma geological evolvement and alpha decay, its crystallinity only decreased 3%, and its crystal shape and structure are still fine, indicating that sphene is of good ability to solidify radioactive elements. Therefore, sphenes are ideal minerals for solidifying nucleus waste.

通过对北祁连牛心山变质杂岩体中榍石(775Ma)和山西凤凰山花岗岩中榍石(1758Ma)的XRD及EDS等测试与研究，结果表明：两地榍石的杂质元素质量分数高达8.6%~10.91%，放射性核素锶、铯和铀的质量分数达4.26%~4.58%；晶胞参数的变化极小，△a=-0.0009nm~0.0041nm、△b=0.0018nm~0.0004nm、△c=0.0002nm~-0.0048nm、△β=-0.10°~0.09°，结晶度仍高达99.27%~96.46%，榍石经过10×10^8a的地质作用，结晶度仅减少了3%，显示榍石固化放射性系列核素的能力较强，虽经历了约775Ma~1758Ma的复杂地质演化及其所含放射性核素的衰变作用，其晶体结构完好，稳定性极高，是值得期待的理想核废物固化矿物。

Therefore, the research on the radionuclide migration behavior is an extremely essential question for the high-level radioactive waste disposal.

因此对放射性核素的迁移行为和规律的研究是高放废物处置的一个十分关键的问题。

TGS method can determine quantitatively with high accuracy transuranic nuclides in heterogeneously distributed media with medium- and high-density, and is thus widely used to assay the location and quantity of selected radioisotopes in scraps and wastes within sealed containers.

它是专用于准确定量测量中、高密度非均匀分布介质中的放射性核素及其含量，是核设施中可回收物以及核废物测量分析的主要方法之一。

High effective decontamination with minimum remainder, erosion, destruc- tiveness may be realized by taking advantage of the high diffusivity, low viscosity, rea- sonable solubility and special separation property in supercritical phase, during which the recycle and reuse of the materials is promoted and the cost for waste management is reduced to the least.

利用超临界状态下流体的高扩散性、低的粘度、良好的溶解能力和独特的分离性质，有可能实现高效去污、废物量最小化、最小的侵蚀性和破坏性、最低的放射性废物管理费用。

Zirconolite-rich synroc is ideal solidification material for solidifying high level radioactive waste .

富钙钛锆石型人造岩石将放射性核素固定在其晶格中作为晶体的一部分固定起来，大大提高了放射性废物处置的长期安全性，是固化高放射性废物理想的固化介质。

Radioactive nuclides are solidified at crystal lattice as one part of crystalloid by zirconolite-rich synroc, which greatly enhances the long-term safety of radioactive waste disposing.

富钙钛锆石型人造岩石将放射性核素固定在其晶格中作为晶体的一部分固定起来，大大提高了放射性废物处置的长期安全性，是固化高放射性废物理想的固化介质。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。